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fm10k: Add ethtool support
[deliverable/linux.git] / drivers / net / ethernet / intel / fm10k / fm10k_ethtool.c
CommitLineData
82dd0f7e
AD		 1/* Intel Ethernet Switch Host Interface Driver
2 * Copyright(c) 2013 - 2014 Intel Corporation.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * The full GNU General Public License is included in this distribution in
14 * the file called "COPYING".
15 *
16 * Contact Information:
17 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
18 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
19 */
20
21#include "fm10k.h"
22
23struct fm10k_stats {
24 char stat_string[ETH_GSTRING_LEN];
25 int sizeof_stat;
26 int stat_offset;
27};
28
29#define FM10K_NETDEV_STAT(_net_stat) { \
30 .stat_string = #_net_stat, \
31 .sizeof_stat = FIELD_SIZEOF(struct net_device_stats, _net_stat), \
32 .stat_offset = offsetof(struct net_device_stats, _net_stat) \
33}
34
35static const struct fm10k_stats fm10k_gstrings_net_stats[] = {
36 FM10K_NETDEV_STAT(tx_packets),
37 FM10K_NETDEV_STAT(tx_bytes),
38 FM10K_NETDEV_STAT(tx_errors),
39 FM10K_NETDEV_STAT(rx_packets),
40 FM10K_NETDEV_STAT(rx_bytes),
41 FM10K_NETDEV_STAT(rx_errors),
42 FM10K_NETDEV_STAT(rx_dropped),
43
44 /* detailed Rx errors */
45 FM10K_NETDEV_STAT(rx_length_errors),
46 FM10K_NETDEV_STAT(rx_crc_errors),
47 FM10K_NETDEV_STAT(rx_fifo_errors),
48};
49
50#define FM10K_NETDEV_STATS_LEN ARRAY_SIZE(fm10k_gstrings_net_stats)
51
52#define FM10K_STAT(_name, _stat) { \
53 .stat_string = _name, \
54 .sizeof_stat = FIELD_SIZEOF(struct fm10k_intfc, _stat), \
55 .stat_offset = offsetof(struct fm10k_intfc, _stat) \
56}
57
58static const struct fm10k_stats fm10k_gstrings_stats[] = {
59 FM10K_STAT("tx_restart_queue", restart_queue),
60 FM10K_STAT("tx_busy", tx_busy),
61 FM10K_STAT("tx_csum_errors", tx_csum_errors),
62 FM10K_STAT("rx_alloc_failed", alloc_failed),
63 FM10K_STAT("rx_csum_errors", rx_csum_errors),
64 FM10K_STAT("rx_errors", rx_errors),
65
66 FM10K_STAT("tx_packets_nic", tx_packets_nic),
67 FM10K_STAT("tx_bytes_nic", tx_bytes_nic),
68 FM10K_STAT("rx_packets_nic", rx_packets_nic),
69 FM10K_STAT("rx_bytes_nic", rx_bytes_nic),
70 FM10K_STAT("rx_drops_nic", rx_drops_nic),
71 FM10K_STAT("rx_overrun_pf", rx_overrun_pf),
72 FM10K_STAT("rx_overrun_vf", rx_overrun_vf),
73
74 FM10K_STAT("timeout", stats.timeout.count),
75 FM10K_STAT("ur", stats.ur.count),
76 FM10K_STAT("ca", stats.ca.count),
77 FM10K_STAT("um", stats.um.count),
78 FM10K_STAT("xec", stats.xec.count),
79 FM10K_STAT("vlan_drop", stats.vlan_drop.count),
80 FM10K_STAT("loopback_drop", stats.loopback_drop.count),
81 FM10K_STAT("nodesc_drop", stats.nodesc_drop.count),
82
83 FM10K_STAT("swapi_status", hw.swapi.status),
84 FM10K_STAT("mac_rules_used", hw.swapi.mac.used),
85 FM10K_STAT("mac_rules_avail", hw.swapi.mac.avail),
86
87 FM10K_STAT("mbx_tx_busy", hw.mbx.tx_busy),
88 FM10K_STAT("mbx_tx_dropped", hw.mbx.tx_dropped),
89 FM10K_STAT("mbx_tx_messages", hw.mbx.tx_messages),
90 FM10K_STAT("mbx_tx_dwords", hw.mbx.tx_dwords),
91 FM10K_STAT("mbx_rx_messages", hw.mbx.rx_messages),
92 FM10K_STAT("mbx_rx_dwords", hw.mbx.rx_dwords),
93 FM10K_STAT("mbx_rx_parse_err", hw.mbx.rx_parse_err),
94};
95
96#define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_stats)
97
98#define FM10K_QUEUE_STATS_LEN \
99 (MAX_QUEUES * 2 * (sizeof(struct fm10k_queue_stats) / sizeof(u64)))
100
101#define FM10K_STATS_LEN (FM10K_GLOBAL_STATS_LEN + \
102 FM10K_NETDEV_STATS_LEN + \
103 FM10K_QUEUE_STATS_LEN)
104
105static void fm10k_get_strings(struct net_device *dev, u32 stringset,
106 u8 *data)
107{
108 char *p = (char *)data;
109 int i;
110
111 switch (stringset) {
112 case ETH_SS_STATS:
113 for (i = 0; i < FM10K_NETDEV_STATS_LEN; i++) {
114 memcpy(p, fm10k_gstrings_net_stats[i].stat_string,
115 ETH_GSTRING_LEN);
116 p += ETH_GSTRING_LEN;
117 }
118 for (i = 0; i < FM10K_GLOBAL_STATS_LEN; i++) {
119 memcpy(p, fm10k_gstrings_stats[i].stat_string,
120 ETH_GSTRING_LEN);
121 p += ETH_GSTRING_LEN;
122 }
123
124 for (i = 0; i < MAX_QUEUES; i++) {
125 sprintf(p, "tx_queue_%u_packets", i);
126 p += ETH_GSTRING_LEN;
127 sprintf(p, "tx_queue_%u_bytes", i);
128 p += ETH_GSTRING_LEN;
129 sprintf(p, "rx_queue_%u_packets", i);
130 p += ETH_GSTRING_LEN;
131 sprintf(p, "rx_queue_%u_bytes", i);
132 p += ETH_GSTRING_LEN;
133 }
134 break;
135 }
136}
137
138static int fm10k_get_sset_count(struct net_device *dev, int sset)
139{
140 switch (sset) {
141 case ETH_SS_STATS:
142 return FM10K_STATS_LEN;
143 default:
144 return -EOPNOTSUPP;
145 }
146}
147
148static void fm10k_get_ethtool_stats(struct net_device *netdev,
149 struct ethtool_stats *stats, u64 *data)
150{
151 const int stat_count = sizeof(struct fm10k_queue_stats) / sizeof(u64);
152 struct fm10k_intfc *interface = netdev_priv(netdev);
153 struct net_device_stats *net_stats = &netdev->stats;
154 char *p;
155 int i, j;
156
157 fm10k_update_stats(interface);
158
159 for (i = 0; i < FM10K_NETDEV_STATS_LEN; i++) {
160 p = (char *)net_stats + fm10k_gstrings_net_stats[i].stat_offset;
161 *(data++) = (fm10k_gstrings_net_stats[i].sizeof_stat ==
162 sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
163 }
164
165 for (i = 0; i < FM10K_GLOBAL_STATS_LEN; i++) {
166 p = (char *)interface + fm10k_gstrings_stats[i].stat_offset;
167 *(data++) = (fm10k_gstrings_stats[i].sizeof_stat ==
168 sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
169 }
170
171 for (i = 0; i < MAX_QUEUES; i++) {
172 struct fm10k_ring *ring;
173 u64 *queue_stat;
174
175 ring = interface->tx_ring[i];
176 if (ring)
177 queue_stat = (u64 *)&ring->stats;
178 for (j = 0; j < stat_count; j++)
179 *(data++) = ring ? queue_stat[j] : 0;
180
181 ring = interface->rx_ring[i];
182 if (ring)
183 queue_stat = (u64 *)&ring->stats;
184 for (j = 0; j < stat_count; j++)
185 *(data++) = ring ? queue_stat[j] : 0;
186 }
187}
188
189/* If function below adds more registers this define needs to be updated */
190#define FM10K_REGS_LEN_Q 29
191
192static void fm10k_get_reg_q(struct fm10k_hw *hw, u32 *buff, int i)
193{
194 int idx = 0;
195
196 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAL(i));
197 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAH(i));
198 buff[idx++] = fm10k_read_reg(hw, FM10K_RDLEN(i));
199 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_RXCTRL(i));
200 buff[idx++] = fm10k_read_reg(hw, FM10K_RDH(i));
201 buff[idx++] = fm10k_read_reg(hw, FM10K_RDT(i));
202 buff[idx++] = fm10k_read_reg(hw, FM10K_RXQCTL(i));
203 buff[idx++] = fm10k_read_reg(hw, FM10K_RXDCTL(i));
204 buff[idx++] = fm10k_read_reg(hw, FM10K_RXINT(i));
205 buff[idx++] = fm10k_read_reg(hw, FM10K_SRRCTL(i));
206 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRC(i));
207 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRDC(i));
208 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_L(i));
209 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_H(i));
210 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAL(i));
211 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAH(i));
212 buff[idx++] = fm10k_read_reg(hw, FM10K_TDLEN(i));
213 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_TXCTRL(i));
214 buff[idx++] = fm10k_read_reg(hw, FM10K_TDH(i));
215 buff[idx++] = fm10k_read_reg(hw, FM10K_TDT(i));
216 buff[idx++] = fm10k_read_reg(hw, FM10K_TXDCTL(i));
217 buff[idx++] = fm10k_read_reg(hw, FM10K_TXQCTL(i));
218 buff[idx++] = fm10k_read_reg(hw, FM10K_TXINT(i));
219 buff[idx++] = fm10k_read_reg(hw, FM10K_QPTC(i));
220 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_L(i));
221 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_H(i));
222 buff[idx++] = fm10k_read_reg(hw, FM10K_TQDLOC(i));
223 buff[idx++] = fm10k_read_reg(hw, FM10K_TX_SGLORT(i));
224 buff[idx++] = fm10k_read_reg(hw, FM10K_PFVTCTL(i));
225
226 BUG_ON(idx != FM10K_REGS_LEN_Q);
227}
228
229/* If function above adds more registers this define needs to be updated */
230#define FM10K_REGS_LEN_VSI 43
231
232static void fm10k_get_reg_vsi(struct fm10k_hw *hw, u32 *buff, int i)
233{
234 int idx = 0, j;
235
236 buff[idx++] = fm10k_read_reg(hw, FM10K_MRQC(i));
237 for (j = 0; j < 10; j++)
238 buff[idx++] = fm10k_read_reg(hw, FM10K_RSSRK(i, j));
239 for (j = 0; j < 32; j++)
240 buff[idx++] = fm10k_read_reg(hw, FM10K_RETA(i, j));
241
242 BUG_ON(idx != FM10K_REGS_LEN_VSI);
243}
244
245static void fm10k_get_regs(struct net_device *netdev,
246 struct ethtool_regs *regs, void *p)
247{
248 struct fm10k_intfc *interface = netdev_priv(netdev);
249 struct fm10k_hw *hw = &interface->hw;
250 u32 *buff = p;
251 u16 i;
252
253 regs->version = (1 << 24) | (hw->revision_id << 16) | hw->device_id;
254
255 switch (hw->mac.type) {
256 case fm10k_mac_pf:
257 /* General PF Registers */
258 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL);
259 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL_EXT);
260 *(buff++) = fm10k_read_reg(hw, FM10K_GCR);
261 *(buff++) = fm10k_read_reg(hw, FM10K_GCR_EXT);
262
263 for (i = 0; i < 8; i++) {
264 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTMAP(i));
265 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTDEC(i));
266 }
267
268 for (i = 0; i < 65; i++) {
269 fm10k_get_reg_vsi(hw, buff, i);
270 buff += FM10K_REGS_LEN_VSI;
271 }
272
273 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL);
274 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL2);
275
276 for (i = 0; i < FM10K_MAX_QUEUES_PF; i++) {
277 fm10k_get_reg_q(hw, buff, i);
278 buff += FM10K_REGS_LEN_Q;
279 }
280
281 *(buff++) = fm10k_read_reg(hw, FM10K_TPH_CTRL);
282
283 for (i = 0; i < 8; i++)
284 *(buff++) = fm10k_read_reg(hw, FM10K_INT_MAP(i));
285
286 /* Interrupt Throttling Registers */
287 for (i = 0; i < 130; i++)
288 *(buff++) = fm10k_read_reg(hw, FM10K_ITR(i));
289
290 break;
291 default:
292 return;
293 }
294}
295
296/* If function above adds more registers these define need to be updated */
297#define FM10K_REGS_LEN_PF \
298(162 + (65 * FM10K_REGS_LEN_VSI) + (FM10K_MAX_QUEUES_PF * FM10K_REGS_LEN_Q))
299
300static int fm10k_get_regs_len(struct net_device *netdev)
301{
302 struct fm10k_intfc *interface = netdev_priv(netdev);
303 struct fm10k_hw *hw = &interface->hw;
304
305 switch (hw->mac.type) {
306 case fm10k_mac_pf:
307 return FM10K_REGS_LEN_PF * sizeof(u32);
308 default:
309 return 0;
310 }
311}
312
313static void fm10k_get_drvinfo(struct net_device *dev,
314 struct ethtool_drvinfo *info)
315{
316 struct fm10k_intfc *interface = netdev_priv(dev);
317
318 strncpy(info->driver, fm10k_driver_name,
319 sizeof(info->driver) - 1);
320 strncpy(info->version, fm10k_driver_version,
321 sizeof(info->version) - 1);
322 strncpy(info->bus_info, pci_name(interface->pdev),
323 sizeof(info->bus_info) - 1);
324
325 info->n_stats = FM10K_STATS_LEN;
326
327 info->regdump_len = fm10k_get_regs_len(dev);
328}
329
330static void fm10k_get_pauseparam(struct net_device *dev,
331 struct ethtool_pauseparam *pause)
332{
333 struct fm10k_intfc *interface = netdev_priv(dev);
334
335 /* record fixed values for autoneg and tx pause */
336 pause->autoneg = 0;
337 pause->tx_pause = 1;
338
339 pause->rx_pause = interface->rx_pause ? 1 : 0;
340}
341
342static int fm10k_set_pauseparam(struct net_device *dev,
343 struct ethtool_pauseparam *pause)
344{
345 struct fm10k_intfc *interface = netdev_priv(dev);
346 struct fm10k_hw *hw = &interface->hw;
347
348 if (pause->autoneg || !pause->tx_pause)
349 return -EINVAL;
350
351 /* we can only support pause on the PF to avoid head-of-line blocking */
352 if (hw->mac.type == fm10k_mac_pf)
353 interface->rx_pause = pause->rx_pause ? ~0 : 0;
354 else if (pause->rx_pause)
355 return -EINVAL;
356
357 if (netif_running(dev))
358 fm10k_update_rx_drop_en(interface);
359
360 return 0;
361}
362
363static u32 fm10k_get_msglevel(struct net_device *netdev)
364{
365 struct fm10k_intfc *interface = netdev_priv(netdev);
366
367 return interface->msg_enable;
368}
369
370static void fm10k_set_msglevel(struct net_device *netdev, u32 data)
371{
372 struct fm10k_intfc *interface = netdev_priv(netdev);
373
374 interface->msg_enable = data;
375}
376
377static void fm10k_get_ringparam(struct net_device *netdev,
378 struct ethtool_ringparam *ring)
379{
380 struct fm10k_intfc *interface = netdev_priv(netdev);
381
382 ring->rx_max_pending = FM10K_MAX_RXD;
383 ring->tx_max_pending = FM10K_MAX_TXD;
384 ring->rx_mini_max_pending = 0;
385 ring->rx_jumbo_max_pending = 0;
386 ring->rx_pending = interface->rx_ring_count;
387 ring->tx_pending = interface->tx_ring_count;
388 ring->rx_mini_pending = 0;
389 ring->rx_jumbo_pending = 0;
390}
391
392static int fm10k_set_ringparam(struct net_device *netdev,
393 struct ethtool_ringparam *ring)
394{
395 struct fm10k_intfc *interface = netdev_priv(netdev);
396 struct fm10k_ring *temp_ring;
397 int i, err = 0;
398 u32 new_rx_count, new_tx_count;
399
400 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
401 return -EINVAL;
402
403 new_tx_count = clamp_t(u32, ring->tx_pending,
404 FM10K_MIN_TXD, FM10K_MAX_TXD);
405 new_tx_count = ALIGN(new_tx_count, FM10K_REQ_TX_DESCRIPTOR_MULTIPLE);
406
407 new_rx_count = clamp_t(u32, ring->rx_pending,
408 FM10K_MIN_RXD, FM10K_MAX_RXD);
409 new_rx_count = ALIGN(new_rx_count, FM10K_REQ_RX_DESCRIPTOR_MULTIPLE);
410
411 if ((new_tx_count == interface->tx_ring_count) &&
412 (new_rx_count == interface->rx_ring_count)) {
413 /* nothing to do */
414 return 0;
415 }
416
417 while (test_and_set_bit(__FM10K_RESETTING, &interface->state))
418 usleep_range(1000, 2000);
419
420 if (!netif_running(interface->netdev)) {
421 for (i = 0; i < interface->num_tx_queues; i++)
422 interface->tx_ring[i]->count = new_tx_count;
423 for (i = 0; i < interface->num_rx_queues; i++)
424 interface->rx_ring[i]->count = new_rx_count;
425 interface->tx_ring_count = new_tx_count;
426 interface->rx_ring_count = new_rx_count;
427 goto clear_reset;
428 }
429
430 /* allocate temporary buffer to store rings in */
431 i = max_t(int, interface->num_tx_queues, interface->num_rx_queues);
432 temp_ring = vmalloc(i * sizeof(struct fm10k_ring));
433
434 if (!temp_ring) {
435 err = -ENOMEM;
436 goto clear_reset;
437 }
438
439 fm10k_down(interface);
440
441 /* Setup new Tx resources and free the old Tx resources in that order.
442 * We can then assign the new resources to the rings via a memcpy.
443 * The advantage to this approach is that we are guaranteed to still
444 * have resources even in the case of an allocation failure.
445 */
446 if (new_tx_count != interface->tx_ring_count) {
447 for (i = 0; i < interface->num_tx_queues; i++) {
448 memcpy(&temp_ring[i], interface->tx_ring[i],
449 sizeof(struct fm10k_ring));
450
451 temp_ring[i].count = new_tx_count;
452 err = fm10k_setup_tx_resources(&temp_ring[i]);
453 if (err) {
454 while (i) {
455 i--;
456 fm10k_free_tx_resources(&temp_ring[i]);
457 }
458 goto err_setup;
459 }
460 }
461
462 for (i = 0; i < interface->num_tx_queues; i++) {
463 fm10k_free_tx_resources(interface->tx_ring[i]);
464
465 memcpy(interface->tx_ring[i], &temp_ring[i],
466 sizeof(struct fm10k_ring));
467 }
468
469 interface->tx_ring_count = new_tx_count;
470 }
471
472 /* Repeat the process for the Rx rings if needed */
473 if (new_rx_count != interface->rx_ring_count) {
474 for (i = 0; i < interface->num_rx_queues; i++) {
475 memcpy(&temp_ring[i], interface->rx_ring[i],
476 sizeof(struct fm10k_ring));
477
478 temp_ring[i].count = new_rx_count;
479 err = fm10k_setup_rx_resources(&temp_ring[i]);
480 if (err) {
481 while (i) {
482 i--;
483 fm10k_free_rx_resources(&temp_ring[i]);
484 }
485 goto err_setup;
486 }
487 }
488
489 for (i = 0; i < interface->num_rx_queues; i++) {
490 fm10k_free_rx_resources(interface->rx_ring[i]);
491
492 memcpy(interface->rx_ring[i], &temp_ring[i],
493 sizeof(struct fm10k_ring));
494 }
495
496 interface->rx_ring_count = new_rx_count;
497 }
498
499err_setup:
500 fm10k_up(interface);
501 vfree(temp_ring);
502clear_reset:
503 clear_bit(__FM10K_RESETTING, &interface->state);
504 return err;
505}
506
507static int fm10k_get_coalesce(struct net_device *dev,
508 struct ethtool_coalesce *ec)
509{
510 struct fm10k_intfc *interface = netdev_priv(dev);
511
512 ec->use_adaptive_tx_coalesce =
513 !!(interface->tx_itr & FM10K_ITR_ADAPTIVE);
514 ec->tx_coalesce_usecs = interface->tx_itr & ~FM10K_ITR_ADAPTIVE;
515
516 ec->use_adaptive_rx_coalesce =
517 !!(interface->rx_itr & FM10K_ITR_ADAPTIVE);
518 ec->rx_coalesce_usecs = interface->rx_itr & ~FM10K_ITR_ADAPTIVE;
519
520 return 0;
521}
522
523static int fm10k_set_coalesce(struct net_device *dev,
524 struct ethtool_coalesce *ec)
525{
526 struct fm10k_intfc *interface = netdev_priv(dev);
527 struct fm10k_q_vector *qv;
528 u16 tx_itr, rx_itr;
529 int i;
530
531 /* verify limits */
532 if ((ec->rx_coalesce_usecs > FM10K_ITR_MAX) ||
533 (ec->tx_coalesce_usecs > FM10K_ITR_MAX))
534 return -EINVAL;
535
536 /* record settings */
537 tx_itr = ec->tx_coalesce_usecs;
538 rx_itr = ec->rx_coalesce_usecs;
539
540 /* set initial values for adaptive ITR */
541 if (ec->use_adaptive_tx_coalesce)
542 tx_itr = FM10K_ITR_ADAPTIVE | FM10K_ITR_10K;
543
544 if (ec->use_adaptive_rx_coalesce)
545 rx_itr = FM10K_ITR_ADAPTIVE | FM10K_ITR_20K;
546
547 /* update interface */
548 interface->tx_itr = tx_itr;
549 interface->rx_itr = rx_itr;
550
551 /* update q_vectors */
552 for (i = 0; i < interface->num_q_vectors; i++) {
553 qv = interface->q_vector[i];
554 qv->tx.itr = tx_itr;
555 qv->rx.itr = rx_itr;
556 }
557
558 return 0;
559}
560
561static int fm10k_get_rss_hash_opts(struct fm10k_intfc *interface,
562 struct ethtool_rxnfc *cmd)
563{
564 cmd->data = 0;
565
566 /* Report default options for RSS on fm10k */
567 switch (cmd->flow_type) {
568 case TCP_V4_FLOW:
569 case TCP_V6_FLOW:
570 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
571 /* fall through */
572 case UDP_V4_FLOW:
573 if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP)
574 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
575 /* fall through */
576 case SCTP_V4_FLOW:
577 case SCTP_V6_FLOW:
578 case AH_ESP_V4_FLOW:
579 case AH_ESP_V6_FLOW:
580 case AH_V4_FLOW:
581 case AH_V6_FLOW:
582 case ESP_V4_FLOW:
583 case ESP_V6_FLOW:
584 case IPV4_FLOW:
585 case IPV6_FLOW:
586 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
587 break;
588 case UDP_V6_FLOW:
589 if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP)
590 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
591 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
592 break;
593 default:
594 return -EINVAL;
595 }
596
597 return 0;
598}
599
600static int fm10k_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
601 u32 *rule_locs)
602{
603 struct fm10k_intfc *interface = netdev_priv(dev);
604 int ret = -EOPNOTSUPP;
605
606 switch (cmd->cmd) {
607 case ETHTOOL_GRXRINGS:
608 cmd->data = interface->num_rx_queues;
609 ret = 0;
610 break;
611 case ETHTOOL_GRXFH:
612 ret = fm10k_get_rss_hash_opts(interface, cmd);
613 break;
614 default:
615 break;
616 }
617
618 return ret;
619}
620
621#define UDP_RSS_FLAGS (FM10K_FLAG_RSS_FIELD_IPV4_UDP | \
622 FM10K_FLAG_RSS_FIELD_IPV6_UDP)
623static int fm10k_set_rss_hash_opt(struct fm10k_intfc *interface,
624 struct ethtool_rxnfc *nfc)
625{
626 u32 flags = interface->flags;
627
628 /* RSS does not support anything other than hashing
629 * to queues on src and dst IPs and ports
630 */
631 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
632 RXH_L4_B_0_1 | RXH_L4_B_2_3))
633 return -EINVAL;
634
635 switch (nfc->flow_type) {
636 case TCP_V4_FLOW:
637 case TCP_V6_FLOW:
638 if (!(nfc->data & RXH_IP_SRC) ||
639 !(nfc->data & RXH_IP_DST) ||
640 !(nfc->data & RXH_L4_B_0_1) ||
641 !(nfc->data & RXH_L4_B_2_3))
642 return -EINVAL;
643 break;
644 case UDP_V4_FLOW:
645 if (!(nfc->data & RXH_IP_SRC) ||
646 !(nfc->data & RXH_IP_DST))
647 return -EINVAL;
648 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
649 case 0:
650 flags &= ~FM10K_FLAG_RSS_FIELD_IPV4_UDP;
651 break;
652 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
653 flags |= FM10K_FLAG_RSS_FIELD_IPV4_UDP;
654 break;
655 default:
656 return -EINVAL;
657 }
658 break;
659 case UDP_V6_FLOW:
660 if (!(nfc->data & RXH_IP_SRC) ||
661 !(nfc->data & RXH_IP_DST))
662 return -EINVAL;
663 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
664 case 0:
665 flags &= ~FM10K_FLAG_RSS_FIELD_IPV6_UDP;
666 break;
667 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
668 flags |= FM10K_FLAG_RSS_FIELD_IPV6_UDP;
669 break;
670 default:
671 return -EINVAL;
672 }
673 break;
674 case AH_ESP_V4_FLOW:
675 case AH_V4_FLOW:
676 case ESP_V4_FLOW:
677 case SCTP_V4_FLOW:
678 case AH_ESP_V6_FLOW:
679 case AH_V6_FLOW:
680 case ESP_V6_FLOW:
681 case SCTP_V6_FLOW:
682 if (!(nfc->data & RXH_IP_SRC) ||
683 !(nfc->data & RXH_IP_DST) ||
684 (nfc->data & RXH_L4_B_0_1) ||
685 (nfc->data & RXH_L4_B_2_3))
686 return -EINVAL;
687 break;
688 default:
689 return -EINVAL;
690 }
691
692 /* if we changed something we need to update flags */
693 if (flags != interface->flags) {
694 struct fm10k_hw *hw = &interface->hw;
695 u32 mrqc;
696
697 if ((flags & UDP_RSS_FLAGS) &&
698 !(interface->flags & UDP_RSS_FLAGS))
699 netif_warn(interface, drv, interface->netdev,
700 "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n");
701
702 interface->flags = flags;
703
704 /* Perform hash on these packet types */
705 mrqc = FM10K_MRQC_IPV4 |
706 FM10K_MRQC_TCP_IPV4 |
707 FM10K_MRQC_IPV6 |
708 FM10K_MRQC_TCP_IPV6;
709
710 if (flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP)
711 mrqc |= FM10K_MRQC_UDP_IPV4;
712 if (flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP)
713 mrqc |= FM10K_MRQC_UDP_IPV6;
714
715 fm10k_write_reg(hw, FM10K_MRQC(0), mrqc);
716 }
717
718 return 0;
719}
720
721static int fm10k_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
722{
723 struct fm10k_intfc *interface = netdev_priv(dev);
724 int ret = -EOPNOTSUPP;
725
726 switch (cmd->cmd) {
727 case ETHTOOL_SRXFH:
728 ret = fm10k_set_rss_hash_opt(interface, cmd);
729 break;
730 default:
731 break;
732 }
733
734 return ret;
735}
736
737static u32 fm10k_get_reta_size(struct net_device *netdev)
738{
739 return FM10K_RETA_SIZE * FM10K_RETA_ENTRIES_PER_REG;
740}
741
742static int fm10k_get_reta(struct net_device *netdev, u32 *indir)
743{
744 struct fm10k_intfc *interface = netdev_priv(netdev);
745 int i;
746
747 if (!indir)
748 return 0;
749
750 for (i = 0; i < FM10K_RETA_SIZE; i++, indir += 4) {
751 u32 reta = interface->reta[i];
752
753 indir[0] = (reta << 24) >> 24;
754 indir[1] = (reta << 16) >> 24;
755 indir[2] = (reta << 8) >> 24;
756 indir[3] = (reta) >> 24;
757 }
758
759 return 0;
760}
761
762static int fm10k_set_reta(struct net_device *netdev, const u32 *indir)
763{
764 struct fm10k_intfc *interface = netdev_priv(netdev);
765 struct fm10k_hw *hw = &interface->hw;
766 int i;
767 u16 rss_i;
768
769 if (!indir)
770 return 0;
771
772 /* Verify user input. */
773 rss_i = interface->ring_feature[RING_F_RSS].indices;
774 for (i = fm10k_get_reta_size(netdev); i--;) {
775 if (indir[i] < rss_i)
776 continue;
777 return -EINVAL;
778 }
779
780 /* record entries to reta table */
781 for (i = 0; i < FM10K_RETA_SIZE; i++, indir += 4) {
782 u32 reta = indir[0] |
783 (indir[1] << 8) |
784 (indir[2] << 16) |
785 (indir[3] << 24);
786
787 if (interface->reta[i] == reta)
788 continue;
789
790 interface->reta[i] = reta;
791 fm10k_write_reg(hw, FM10K_RETA(0, i), reta);
792 }
793
794 return 0;
795}
796
797static u32 fm10k_get_rssrk_size(struct net_device *netdev)
798{
799 return FM10K_RSSRK_SIZE * FM10K_RSSRK_ENTRIES_PER_REG;
800}
801
802static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key)
803{
804 struct fm10k_intfc *interface = netdev_priv(netdev);
805 int i, err;
806
807 err = fm10k_get_reta(netdev, indir);
808 if (err || !key)
809 return err;
810
811 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4)
812 *(__le32 *)key = cpu_to_le32(interface->rssrk[i]);
813
814 return 0;
815}
816
817static int fm10k_set_rssh(struct net_device *netdev, const u32 *indir,
818 const u8 *key)
819{
820 struct fm10k_intfc *interface = netdev_priv(netdev);
821 struct fm10k_hw *hw = &interface->hw;
822 int i, err;
823
824 err = fm10k_set_reta(netdev, indir);
825 if (err || !key)
826 return err;
827
828 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4) {
829 u32 rssrk = le32_to_cpu(*(__le32 *)key);
830
831 if (interface->rssrk[i] == rssrk)
832 continue;
833
834 interface->rssrk[i] = rssrk;
835 fm10k_write_reg(hw, FM10K_RSSRK(0, i), rssrk);
836 }
837
838 return 0;
839}
840
841static const struct ethtool_ops fm10k_ethtool_ops = {
842 .get_strings = fm10k_get_strings,
843 .get_sset_count = fm10k_get_sset_count,
844 .get_ethtool_stats = fm10k_get_ethtool_stats,
845 .get_drvinfo = fm10k_get_drvinfo,
846 .get_link = ethtool_op_get_link,
847 .get_pauseparam = fm10k_get_pauseparam,
848 .set_pauseparam = fm10k_set_pauseparam,
849 .get_msglevel = fm10k_get_msglevel,
850 .set_msglevel = fm10k_set_msglevel,
851 .get_ringparam = fm10k_get_ringparam,
852 .set_ringparam = fm10k_set_ringparam,
853 .get_coalesce = fm10k_get_coalesce,
854 .set_coalesce = fm10k_set_coalesce,
855 .get_rxnfc = fm10k_get_rxnfc,
856 .set_rxnfc = fm10k_set_rxnfc,
857 .get_regs = fm10k_get_regs,
858 .get_regs_len = fm10k_get_regs_len,
859 .get_rxfh_indir_size = fm10k_get_reta_size,
860 .get_rxfh_key_size = fm10k_get_rssrk_size,
861 .get_rxfh = fm10k_get_rssh,
862 .set_rxfh = fm10k_set_rssh,
863};
864
865void fm10k_set_ethtool_ops(struct net_device *dev)
866{
867 dev->ethtool_ops = &fm10k_ethtool_ops;
868}
Linux kernel - Deliverables
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